CVE-2023-44186 (GCVE-0-2023-44186)
Vulnerability from cvelistv5
Published
2023-10-11 20:08
Modified
2024-12-03 14:49
Severity ?
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-755 - Improper Handling of Exceptional Conditions
  • Denial of Service (DoS)
Summary
An Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition. This issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor. Note: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability. This issue affects: Juniper Networks Junos OS: * All versions prior to 20.4R3-S8; * 21.1 versions 21.1R1 and later; * 21.2 versions prior to 21.2R3-S6; * 21.3 versions prior to 21.3R3-S5; * 21.4 versions prior to 21.4R3-S5; * 22.1 versions prior to 22.1R3-S4; * 22.2 versions prior to 22.2R3-S2; * 22.3 versions prior to 22.3R2-S2, 22.3R3-S1; * 22.4 versions prior to 22.4R2-S1, 22.4R3. Juniper Networks Junos OS Evolved * All versions prior to 20.4R3-S8-EVO; * 21.1 versions 21.1R1-EVO and later; * 21.2 versions prior to 21.2R3-S6-EVO; * 21.3 versions prior to 21.3R3-S5-EVO; * 21.4 versions prior to 21.4R3-S5-EVO; * 22.1 versions prior to 22.1R3-S4-EVO; * 22.2 versions prior to 22.2R3-S2-EVO; * 22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO; * 22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO.
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Version: 0   ≤
Version: 21.1R1   ≤
Version: 21.2   ≤
Version: 21.3   ≤
Version: 21.4   ≤
Version: 22.1   ≤
Version: 22.2   ≤
Version: 22.3   ≤
Version: 22.4   ≤
Create a notification for this product.
   Juniper Networks Junos OS Evolved Version: 0   ≤
Version: 21.1   ≤
Version: 21.2   ≤
Version: 21.3   ≤
Version: 21.4   ≤
Version: 22.1   ≤
Version: 22.2   ≤
Version: 22.3   ≤
Version: 22.4   ≤
Create a notification for this product.
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\"source\": {\"defect\": [\"1736029\"], \"advisory\": \"JSA73150\", \"discovery\": \"EXTERNAL\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"20.4R3-S8\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.1R1\", \"lessThan\": \"21.1*\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.2\", \"lessThan\": \"21.2R3-S6\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.3\", \"lessThan\": \"21.3R3-S5\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4\", \"lessThan\": \"21.4R3-S5\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.1\", \"lessThan\": \"22.1R3-S4\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.2\", \"lessThan\": \"22.2R3-S2\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.3\", \"lessThan\": \"22.3R2-S2, 22.3R3-S1\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.4\", \"lessThan\": \"22.4R2-S1, 22.4R3\", \"versionType\": \"semver\"}], \"platforms\": [\"MX Series\", \"PTX Series\", \"ACX Series\", \"EX Series\", \"QFX Series\"], \"defaultStatus\": \"unaffected\"}, {\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS Evolved\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"20.4R3-S8-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.1\", \"lessThan\": \"21.1*-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.2\", \"lessThan\": \"21.2R3-S6-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.3\", \"lessThan\": \"21.3R3-S5-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4\", \"lessThan\": \"21.4R3-S5-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.1\", \"lessThan\": \"22.1R3-S4-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.2\", \"lessThan\": \"22.2R3-S2-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.3\", \"lessThan\": \"22.3R2-S2-EVO, 22.3R3-S1-EVO\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.4\", \"lessThan\": \"22.4R2-S1-EVO, 22.4R3-EVO\", \"versionType\": \"semver\"}], \"platforms\": [\"PTX Series\", \"ACX Series\", \"QFX Series\"], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\\n\\n\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eJuniper SIRT is not aware of any malicious exploitation of this vulnerability.\u003c/p\u003e\", \"base64\": false}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2023-10-11T16:00:00.000Z\", \"value\": \"Initial Publication\"}, {\"lang\": \"en\", \"time\": \"2023-10-16T16:00:00.000Z\", \"value\": \"Added specific platforms affected and unaffected\"}, {\"lang\": \"en\", \"time\": \"2024-03-05T17:00:00.000Z\", \"value\": \"Updated affected/fixed releases to convey that 23.2R1 and all subsequent releases are fixed.\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"The following software releases have been updated to resolve this specific issue: \\n\\nJunos OS: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S1, 22.4R3, 23.2R1, and all subsequent releases.\\n\\nJunos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S1-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.\\n\\n\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eThe following software releases have been updated to resolve this specific issue: \u003c/p\u003e\u003cp\u003eJunos OS: 20.4R3-S8, 21.2R3-S6, 21.3R3-S5, 21.4R3-S5, 22.1R3-S4, 22.2R3-S2, 22.3R2-S2, 22.3R3-S1, 22.4R2-S1, 22.4R3, 23.2R1, and all subsequent releases.\u003c/p\u003e\u003cp\u003eJunos OS Evolved: 20.4R3-S8-EVO, 21.2R3-S6-EVO, 21.3R3-S5-EVO, 21.4R3-S5-EVO, 22.1R3-S4-EVO, 22.2R3-S2-EVO, 22.3R2-S2-EVO, 22.3R3-S1-EVO, 22.4R2-S1-EVO, 22.4R3-EVO, 23.2R1-EVO, and all subsequent releases.\u003c/p\u003e\", \"base64\": false}]}], \"datePublic\": \"2023-10-11T16:00:00.000Z\", \"references\": [{\"url\": \"https://supportportal.juniper.net/JSA73150\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Current operational and security best practices, such as limiting the AS PATH length, should mitigate risk of this issue.\\n\\nBelow is an example configuration to limit AS PATH to 30 entries:\\n\\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from protocol bgp\\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 from as-path 31as\\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 term more-than-30 then reject\\nset groups BASE-POLICY policy-options policy-statement MaxAS-Limit-30 then accept\\nset groups BASE-POLICY policy-options policy-statement Customer-IN term MaxAS-Limit from policy MaxAS-Limit-30\\nset groups BASE-BGP protocols bgp group \u003c*-CUSTOMER\u003e import Customer-IN\\nset groups BASE-PREFIX-LISTS policy-options as-path 31as \\\".{31,}\\\"\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-av217\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"\\nAn Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition.\\n\\nThis issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.\\n\\nNote: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.\\nThis issue affects:\\n\\nJuniper Networks Junos OS:\\n\\n\\n\\n  *  All versions prior to 20.4R3-S8;\\n  *  21.1 versions 21.1R1 and later;\\n  *  21.2 versions prior to 21.2R3-S6;\\n  *  21.3 versions prior to 21.3R3-S5;\\n  *  21.4 versions prior to 21.4R3-S5;\\n  *  22.1 versions prior to 22.1R3-S4;\\n  *  22.2 versions prior to 22.2R3-S2;\\n  *  22.3 versions prior to 22.3R2-S2, 22.3R3-S1;\\n  *  22.4 versions prior to 22.4R2-S1, 22.4R3.\\n\\n\\n\\n\\nJuniper Networks Junos OS Evolved\\n\\n\\n\\n  *  All versions prior to 20.4R3-S8-EVO;\\n  *  21.1 versions 21.1R1-EVO and later;\\n  *  21.2 versions prior to 21.2R3-S6-EVO;\\n  *  21.3 versions prior to 21.3R3-S5-EVO;\\n  *  21.4 versions prior to 21.4R3-S5-EVO;\\n  *  22.1 versions prior to 22.1R3-S4-EVO;\\n  *  22.2 versions prior to 22.2R3-S2-EVO;\\n  *  22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;\\n  *  22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO.\\n\\n\\n\\n\\n\\n\\n\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\\n\\n\u003cp\u003eAn Improper Handling of Exceptional Conditions vulnerability in AS PATH processing of Juniper Networks Junos OS and Junos OS Evolved allows an attacker to send a BGP update message with an AS PATH containing a large number of 4-byte ASes, leading to a Denial of Service (DoS). Continued receipt and processing of these BGP updates will create a sustained Denial of Service (DoS) condition.\u003c/p\u003e\u003cp\u003eThis issue is hit when the router has Non-Stop Routing (NSR) enabled, has a non-4-byte-AS capable BGP neighbor, receives a BGP update message with a prefix that includes a long AS PATH containing large number of 4-byte ASes, and has to advertise the prefix towards the non-4-byte-AS capable BGP neighbor.\u003c/p\u003eNote: NSR is not supported on the SRX Series and is therefore not affected by this vulnerability.\u003cbr\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJuniper Networks Junos OS:\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions prior to 20.4R3-S8;\u003c/li\u003e\u003cli\u003e21.1 versions 21.1R1 and later;\u003c/li\u003e\u003cli\u003e21.2 versions prior to 21.2R3-S6;\u003c/li\u003e\u003cli\u003e21.3 versions prior to 21.3R3-S5;\u003c/li\u003e\u003cli\u003e21.4 versions prior to 21.4R3-S5;\u003c/li\u003e\u003cli\u003e22.1 versions prior to 22.1R3-S4;\u003c/li\u003e\u003cli\u003e22.2 versions prior to 22.2R3-S2;\u003c/li\u003e\u003cli\u003e22.3 versions prior to 22.3R2-S2, 22.3R3-S1;\u003c/li\u003e\u003cli\u003e22.4 versions prior to 22.4R2-S1, 22.4R3.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eJuniper Networks Junos OS Evolved\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eAll versions prior to 20.4R3-S8-EVO;\u003c/li\u003e\u003cli\u003e21.1 versions 21.1R1-EVO and later;\u003c/li\u003e\u003cli\u003e21.2 versions prior to 21.2R3-S6-EVO;\u003c/li\u003e\u003cli\u003e21.3 versions prior to 21.3R3-S5-EVO;\u003c/li\u003e\u003cli\u003e21.4 versions prior to 21.4R3-S5-EVO;\u003c/li\u003e\u003cli\u003e22.1 versions prior to 22.1R3-S4-EVO;\u003c/li\u003e\u003cli\u003e22.2 versions prior to 22.2R3-S2-EVO;\u003c/li\u003e\u003cli\u003e22.3 versions prior to 22.3R2-S2-EVO, 22.3R3-S1-EVO;\u003c/li\u003e\u003cli\u003e22.4 versions prior to 22.4R2-S1-EVO, 22.4R3-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\\n\\n\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-755\", \"description\": \"CWE-755 Improper Handling of Exceptional Conditions\"}]}, {\"descriptions\": [{\"lang\": \"en\", \"description\": \"Denial of Service (DoS)\"}]}], \"configurations\": [{\"lang\": \"en\", \"value\": \"Nonstop Active Routing is enabled using the following configuration:\\n\\n [edit chassis redundancy]\\ngraceful-switchover;\\n\\n[edit routing-options]\\nnonstop-routing;\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cp\u003eNonstop Active Routing is enabled using the following configuration:\u003c/p\u003e \u003ctt\u003e[edit chassis redundancy]\u003cbr\u003e\u003c/tt\u003e\u003ctt\u003egraceful-switchover;\u003cbr\u003e\u003c/tt\u003e\u003ctt\u003e\u003cbr\u003e[edit routing-options]\u003cbr\u003e\u003c/tt\u003e\u003ctt\u003enonstop-routing;\u003c/tt\u003e\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2024-03-05T23:07:57.356Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-44186\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-12-03T14:49:41.755Z\", \"dateReserved\": \"2023-09-26T19:30:27.953Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2023-10-11T20:08:26.308Z\", \"assignerShortName\": \"juniper\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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